Dental blower.



P. L. WILLIAMS.

DEN TAL BLOWER.

APPLIOATION FILED MAY 7, 1907.

Patented Oct. 13, 1908.

2 SHEETS-SHEET l.

1?. B. wILLiAMs. DENTAL BLOWER.

APPLIUATIOI FILED IAY 7, 1907. V

Patented Oct. 13,1908.

2 SHEETS-BREET-Z.

c c n rERcr EARL wiLLiAMs, oF 'SAVANNn GEORGIA.

DENTAL 1an-owns..

Specification of Letters Patent. Applicatiennled lay 7, 1907. Serial No. 4372,380

Patented oct. 13, 190s.

To all 'whom 'it may comem:

Be it known that I, PERGY EARL WIL LIAMS, a citizen of the United States, residing at Savannah, Chatham county, Georgia, have invented certain new and useful Improvements in Dental Blowers; and 'I do to be a full, clear, and exact description o the invention, --such as will enable others skilled in the art to hereby declare the follo which it appertains to, make and use 'the Same.

' This invention relates to certain improvements in dental apparatus, andmore particularly relates`toimprovementsin what might bc termed automatic dental blowers, or c 'p blowers; and the -oo'etats and nature of the invention 'will be rea y understood b those skilled in the art in the light o the fo lowing explanation of` the structure shown in the ac'` companying drawings as the f'preerred embodiment from among other orms and arrangements the'spirit and scope of my mvention.

. An ob'ect of the invention is to provide improve means in compact form which can be slutably'secured or otherwise a plied to somepart of or adjacent to a denta l engine,

to be operated by the endless belt driven by the engine and dnving'the dental drill or other tool, to deliver an air blast against the tooth or in the cavity thereof to remove the chips,

cool the tooth, cleanse and dry.l the cavity, or for other purposes.

A further object of the invention is to provide certain .improvements arrangement and construction of parts and elements,

whereby a hi hly efficient and eiective dental blower will be produced for deliverin an air blast in a tooth cavity duringthe'diiing operationor during other steps or operations involvedin dental practice.

The invention consists in certain novel features'in construction and 'in combinations of elements and' arrangements of parts as more fully and particularly set'fo'rth and 'pointed out hereinafter.

Referring to the accompanying' draw'- ings :Fig'ure 1, 1s a perspective view showto. in the. plane of the line 2-- 2,=11*`i ,g;. 4. Fig. 3, is adetailperspective' of the'air com resso'r in" a portion of an electrically ,operated dene ta en ine, with my invention appliedthereig. 2, isa vertical' cross section 'taken .and driving parts removed from the' ox or casing. Fig.Y 4,` is a longitudinal horizontal 4 section through;` the-box or and the artig projecti receive asma or tube 2, extending-toa metal nozzle 3 have 'ropcting beyond' drill is working.

disconnected 5 at their'lower ends securedfto 4by screws or other suitable lmeans and exfair compressor therein. 5, is a longitudinal vertical section.

1:1511 inventionV involves .a comparatively sm compact closed metal box or casing containing an air compressor with la coup? nozzle or nipple from the air compressor atthe exteriorof the box to rubber or other flexible hose ing a jet discharge end 4,

the end of a sleeve 5, on w said nozzle 3 is longitudinally secured. This sleeve can is adapted to removably'slip and lit on the Y be formed with a bayonet slot 6. This sleeve handA ieceof a dental instrument, such as a -denta drill, withthe jet discharge end A5,

thereof adjacent to the drill 4and so arranged as to direct an air blast on 'the bur of the drill or into the tooth cavity in which the The bgyonet slot 6, is adapted to recelve a later projection from the dental hand ieee which will enter ithe `lateralinner end'ol, the ba cnet slct and thus hold the' sleeve against ongitudinal movegrinding operation.

L' I do not -wish to limit myself to the particular form of sleeve 5, shown for carrying the air blastnozzle todirect theairhlast intothe tooth cavity in which the instrument is working, Vas other means'can-be employed to 'detachably-connect the dental instrument and 4nozzle and other forms o'f air lblast nozzles can be employed. For instance whenit is desired to heat the airfor ing out cavities, or other purplosea the flexible tube can be to any suitable air heating nozzle, such as an electric air heating nozzle ofthe type now on the market.

The box or casing, 7, isstrongly'cons'truc ted ment -on the dental instrument during the omthe nozzle 5'andconnected and-isprovided with suitable means for securing the same to a part of a dental engine or to some mrt or fixture adjacentthereto.

Inthe speci box provided-with securing braclrets 1n .the

Aform of. apair 'of spaced metal hanersS, Flg.

1100Y c example illustrated 'l show'the tending upwardly. therefrom, and at. 'theirv -upir extremities :having =laterally extending 011 vor. feet (see Fig. :2) engaging the underV side of a'bar o'f-'the engine armA and firmly yet .removably secured and clamped thereto' by screws 9.

. tion of a common type of electric dental engine, wherein 10, is the supporti bracket, and 11, is the usually balanced an swinging arm or frame, at one end carrying the electric motor 12, having the driving wheel Yor pulley 13, receiving and driving the endless cable 14;, which extends along said arm to and driving the dental drill or other instrument (not shown) carried by the free end of said arm or frame. The arm or frame is provided with idler Wheels or pulleys receiving the driving cable and guiding and maintaining the desired tension thereof. Where my invention is applied to an engine of this ty e ,v l usually, as Vhereinbefore described, rigidlly secure the compressor box 7, to and depending from the frame or arm 11, and at a comparatively short distance from the motor 12, and l actuate the air compressor within the box by the driving cable 14, through the medium of a grooved pulley 16, on the drive shaft of the com ressor and arranged at the exterior of a vertical side face of the box. The driving cable 14, can be arranged in any suitable manner to drive the dpulley 16. For instance, in Fig. 1, l show one ply of the cable loo ed rearwardly `to pass around pulley 16, sai ply of the cable extending rearwardly from a cable tightening pulley 15, carried by means adjustable longitudinally of the arm or frame 11, to and around pulley 16, and thence forwardly to a guiding pulley 17, at a point in the frame.

l usually arrange a grooved idler pulley 18, on the compressor drive shaft, and beside the compressor drive pulley 16 and parallel therewith, so that the cable 14, can be slipped from one pulley to the other to throw the Vcomplressor into or out of action.

l' also usua y arrange a support, bracket or hook 19, at the exterior of a side face of the compressor box to receive and support the tube and its discharge nozzle when disconnected from the dental instrument.

The air compressor com rises a pair of opposed similar horizontal cy inders 20, open at their inner ends, and closed at their outer ends exce t for the air outlet ports 21 through` the cylin er heads. Each ort 21 opens into the lower end of a vertica od take pi e or elbow 22 rigidly secured to the cylinder heads and extending upwardly therefrom.. At theirupper ends these ofl take pipes or elbows are, fitted with upwardly opening check valvesv23. These two pipes 22 discharge upwardly into a com ressed air main or lpipe 24, arranged longitu inally above the mders. This main 24, consists of a comparatively strong or stidl strai ht length of pipe open and threaded at its ischarge end to receive and form a tight joint with the discharge nipple or coupling 25 which is removably screwed thereinto and which prof Lects through anopehing in the end of the ox to detachably receive the ilexible tube andere hereinbefore described. rl`his longitudinal pipe or main is formed with depending ends 26, detachably coupled to the upper ends of pipes 22, by threaded coupling sleeves 27, and the check valves are usually located within said sleeves and between said pipe ends so that either cylinder can be disconnected from the main 24, through the medium of a coupling sleeve and access can thus be easily had to the check valves and their controlling springs.

rlhe two cylinders 26, are connected together and xed with res ect to each other' by the web or longitudina connecting length 28 between the lower portions of their open ends. Usually the connecting portion or web 28, is formed in one piece with the cylinders, by removing a transverse portion of an intermediate part of a stiff metal tubo leaving the two ends thereof to form the cylinders, and a portion of the intermediate part to form the lon itudinal connecting web 2S, and an upturne flap or supporting flange 29.

Each cylinder contains a suitable reciprocating piston head 30, and these two piston heads are connected together' to work simnltaneously and to alternately erform their air compressing strokes.A Eac i piston head is secured to a piston rod 31, usually formed by a metal tube. The outer ends of the two straight horizontal rods 31 are secured to a reciprocating cross head 32, whereby the two piston rods and piston heads are secured together to move and reciprocate as one element. The cross head 32, is in the form of a vertically elongated and longitudinally slotted slide each side of which is provided with a projecting rigid lug or pin 33, removably fitting longitudinally into the end of a piston rod 31, and removably clamped therein by a Iset screw 34. By this arrangement either iston rod can be disconnected and removed or repair or renewal.

The cross head is confined to slide or reciprocate in a fixed plane by a longitudinal guide or slideway 35 rigidly fixed to the under side of the main 24 and depending therefrom, while the lower end of the cross head 32 can if desired, slide on the top face of the connecting web 28.

The cross head 32 is reci rocated by crank pin 36, working in longitu inal slot 37 of thev cross head, and carried by and rojecting laterallv from the face of a cranr disk 38 secured on the end of the shaft 39, journaled in and carried by a suitable frame and having a gear wheel 40, rigidly secured thereto. This gear wheel 40, meshes with and is driven by a toothed pinion 41, rigid on the drive shaft 42, also mounted in and carried by said frame and extending to the exterior Aof the box and there carrying the pulleys 16 ample illustrated is formed oitwo stro lelism,` spaced apart by suitable-means'such as-bolts shafts 39. and 42, pass throu h -t -said shafts.

bolts.

' of the held inthe box crease or diminish A-sockets .to Increase or the throw screwin on the. threaded -extendedg-end of .to tqmtherewaht.4

` nut 162screwingonto thezextended-en 'the'-hub, and' also confining tliekey 1 .61I;i r 1 66 YIfso desired the front wall',

metal bars or plates 4 3, arranged in parv and 'secured rigidly together and and spacing. sleeves 44, see Fi 4. The plates 43 and certain journal boxes o any Ipproved construction are provided in the' p ats for The gearing 40, 41 is arranged. between said plates. j r 'i v.

The cylinders are rigidly secured to and are carried b this frame through the medlum of the ange 29, from the web 28, extended ljwardlybeside the inner plate 43 and rigi y secured thereto by screws or The crank disk 38` is 'shown interposed between the reciprocating cross Yhead 'and the inner plate`43 'of 'the frame.

The plates 43, are arranged 'longitudinally and behind the same, but usually ave a slight inclination so that access can be had from the front tothe' journal box or bearing ofthe shaft 42,' as will be seen by reference to Figs. 3 and 5. i

The frame, and consequently the 'compresser, can be rilgidlysecured inthe box by olts 45 rigid wit the rear Yplate '43, and extendm through openings 1n the rear wallox an detachab y receiving clamping nuts 46 .adapted to screw on the bolts 45 and engage the rear wall of the box. The compressor can' be further tightened' and by the shaft 42, projecting rearwardly throng the 'rear wall ofthe box, and by the'couplmg nozzle 25which usually screws a ainst the-end wall of the box. If so esired, means can be provided to inthe throw or working stroke of the istons'. For inst'ance,Y I show the crank dlsk 38 formed with 'several threaded sockets 380, arranged at dilerent of the cylinders,

distances from the center of the 'dsk,: to -deh tachably receive the crank pin 36.4 The crank pm can be inserted in any one offthese oithepistons. If so desired, for the purposes of taking iupv wear oxfor other reasons, Ii can form the cross head 32.01' two longitudinal sections, detachably secured and clamped to ther by screws-32Q, as shown more fully in l Any'sultable means 'can be I provided for detac ably mounting the drive pulley 16,l and the idler 18, on lthe compressorv drive shaft42. V'For instance, I Vshow the drive pulley 16 formed with aniextended hubf160 the sha t 42 and detachahlyflockedthereon a removable key 161. The ldler 18, remova ly ts `and'rturl'i's loosely on the hub 160 and is confined'.- thereon place acacia ,the-frame thereof from the operations.

can' be removable to permit ready access to the compressor. for oilingand adjustment, and whereby the entire compressor can be -removed from the' box on the detachment of rear wall of the The operation of the compressorwill be obvious to those skilled in the art from the foregoing description ofthe drawings,.and it will also be obvious that comparatively ay small amount of power will be required to operate the compressor in view ofthe extended leverage of the pinion 41 on the cross horizontal, vertical orother ositions to be driven by the cable of the engine whether the ine is of the electric or foot power type. @ult is evident that various changes and .modiicationsmight be resorted to in the forms, Vconstructions and arrangements of the parts described, and that elements might be added, or parts removed, without d eparting from the spirit andsco e of m mvention and hence I do not 'wis to limit myself to the exact constructions shown.

:Having thus'descrlbed my invention, what I- claim as new and-desire to secure by Letters Patent of the United States is 1. A blower comprising a frame, a air o f spaced opposrllalined-compressor cy mders aving open a connecting web between said cylinders having an upwardly extending side support' mg flange, said cylinders formed from a tube having lts intermediate portion between the cylinders open fat the front and top and forming `said web and supporting flange, means secu v the cyllnders, pistons in said c linders ing piston rods, a rotary sha t carried by 'said iiange to the frame 'tosuplport av'- 'sald' means, and operatingconnections between said shat and rods. to

pistons, substantially as lescribed.

opposedv com resso'r cylinders ha Aa con-g necting web connecting'said 'shaft and rods for reciprocatr ends and outer end heads,

reciprocate said 2. A blower comprisingl a franiez ya pair of tween their inneren s 'anda sup orting ange from said vweb secured to Y sal vlrameand supporting said-cylinders, -leciprocatory pistons'in' sald cylindersV having plston'rods, arotary shaft, means operatively v 45 Y- spaced from said cylinders and having a e at sai open inner ends and a connecting supporting web between said inner` ends, means securing ic said web to said frame and thereby supporting said cylinders from their inner ends, reciprocating pistons in said cylinders having piston rods extending over said web a rotary shaft, operative means between the inner ends of said cylinders and connecting shaft and rods to reciprocate said pistons, and a compressed-air-olitake pi e system having a compressed air outlet an comprising a stiii main s aced from and arranged about parallel wit said cylinders and lateral stiff ipes fixed thereto and to the outer ends o the cylinders, whereby the outer ends of the cylinders are connected by said pipe system.

4.- A dental blower comprising an air compressor supporting trame, a pair of opposed spaced air compressor cylinders having a connecting web provided withv a su porting flange between the cylinder ends an secured to said frame and formingv the sole support for the cylinders, pistons in said cylinders, means for reciprocating said pistons, and a compressed air main having a discharge and arranged longitudinally. oi and above said cylinders, and depending compressed air inlet pipes from the cylinders to said main, where y the cylinders' are braced by said main and pipes, vsubstantially as described. p 5. A dental blower comprising a frame, a pair of opposed air compressor cylinders arranged beside said frame and xed thereto, a cross head between said cylinders, means for reciprocating the same, pistons insaid cylinders having their piston lrods secured to said head, a compressed air main arranged to one side of said frame and longitudinally of and deway for said head fixed to an intermedie ate part thereof, said main having an air discharge from one end, and valved air disl V chargepassages from the outer ends of said cylinders to said main. Y

i 6. blower comprising-aJ frame, a pair of 'opposed i compressor -cy ders secured to said frame, a connecting'web between the inner open ends ofL said'cylinders, a comressed air main spaced from and arranged ongitudinally of said c lindersand having lateral valved pipes tot e outer ends of said cylinders, reciprocatory pistons "in lsaid cylinders having piston rods, a transversely disposed reciprocatory .cross head secured to and between the inner ends oi said iston rods and having a lo itudinal gui eway, the op osite ends of said ead being arranged web and main, respectively, the intersoa-sia mediate portion of said main provided with means maintainin ysaid head to reciprocation in aiixed p ane, a rotary cra-nx pin working in said cross head guldeway, and means actuating said crank pin to reciprocate saidcross head.

7.- A dental blower comprising a box adapted to be secured to a dental appliance, a removable air compressor supporting frame secured within said box, an air comr'essor within the box and carried by said rra-me, a drive shaft for said compressor provided with and carrying removable driving means-at'the exterior of the box, a compressed air main carried by the compressor and arranged within the box, and removable means clamping said main to said box and extending to the exterior of the box to receive Van o'ftake pipe, substantially as described. S5 8.' A portable dental blower comprising a compressor supporting and inclosing box having exterior supporting means for attachment to a dental appliance, said box having an opening anda removable section normally secured to and closing said opening, a removable air compressor Within said box opposite said removable section and ada ted to be bodily inserted in or removed om said box through said opening and compris 95 ing a compressor sun orting and carrying frame, means removably securing said frame to and within the box, a compressor actuating shaft, a driving member arranged at the exterior of the box, means removably coupling said driving member to said shaft, a compressed air main, and a pi e connection removably coupled thereto an extending to the exterior oi the box for receiving an oittalre pipe, substantially as described.

9. A dental blower comprising a mbox adapted to be attached to a dental engine, and having a removable wall whereby tho interior ot' the box can be exposed, a removable frame secured within said box, air compressor cylinders arranged behind said removable wall and beside and fixed to said frame, pistons for said cylinders, eccentric means for reciprocating said pistons and arranged beside said frame and exposed behind said front wall, ashait mounted in said trame for-actuating. said eccentric means, driving means at the exterior ci the box, means removably and operatively connecting saiddriving means with said shaft, a compressed air ofi'take within said box, and a nipple removably connected therewith and extending to the exterior oi the box for coupling with a pipe to convey the compressed air to the worlr.

10. A dental blower comprising a box vadapted to be secured toa dental engine, a

removable air com ressor supporting frame secured within sai( box, an air compressor cylinder within the box and fixed to and carried bywsaidra-In'e,l a piston Within said cylinder, p1s`ton ,reciprocating meansA carried by said frame and comprising a drive shaft provided with and carrying removabledrivmg means at the exterior of the box, a compressed air main carried by said cylinder and removable with said frame, and removable means clamping said main to said box and extending to the exterior ofthe box to receive an exterior pipe.

11. A dental blower comprising a box having a removable wall, a longitudinally arranged.`air compressor supporting frame arranged WithinV said box, `means removably securing said frame a ainst a ixed wall of said box opposite sai /removable'walL air compressor cylinders arranged at the outer side of and fixed to and carried by said frame and provided with pistons and piston rods,

means carried by said frame for reciprocatterior o f the box, 4a compressed air main from sald'cylinders arran ed within the box and removable lwith-sai frame, and a removable pipe connection extending to the exterior o of said box.

-13.,A portable dental blower comprising secured thereto, air

and securing said main to a wall` a compressor supporting and inclosing box having exterior su porting means for attachmentto a denta appli-ance, said box having an opening and a removable section normally secured to and closing said opening,

a removable air compressor within said box and adapted to be bodily inserted in or removed from said box through said opening and comprising a compressor sup orting and carryin frame, means remova ly securing said ame to and within the` box, a compressor actuating shaft, a driving member. arranged at the exterior ofthe box, means removably coupling said driving member to said shaft, and a compressed air main adapted to be removably coupled with an exterior oftake pipe.

14. A dental blower comprising anA air compressor su porting frame comprising spaced longitu inal bars, atransverse drive s aftV mounted in said bars and provided With a driving pinion between the bars, a transverse counter shaft mounted in said bars and rovided with a 4gear wheel between the ars and meshing with said pinion,

a crank disk and crank pin beyond sald bars, on the outer end of said counter shaft, spaced opposin alined air compressor cylinders arranged ongitudinally beside said bars and fixed to the outer bar and provided with pistons and iston rods, said lcrank disk being arranged etween said cylinders and sal pin actuating saidpistons, and a com ressed air main connecte with and carried y said cylinders.

I testimony whereof I affix my signature, in presence of two witnesses.

PERCY EARL Y y t Witnesses: -Y PERCY H. MOORE, HUBERT E. PEoK.

WILLIAMS. 

